Re: [PATCH 0/8] Introduce fwctl subystem

Dan Williams
2024-06-06T22:11:44Z

Leon Romanovsky wrote:
> On Wed, Jun 05, 2024 at 09:56:14PM -0700, Dan Williams wrote:
> > Jason Gunthorpe wrote:
>
> <...>
>
> > So my questions to try to understand the specific sticking points more
> > are:
> >
> > 1/ Can you think of a Command Effect that the device could enumerate to
> > address the specific shenanigan's that netdev is worried about? In other
> > words if every command a device enables has the stated effect of
> > "Configuration Change after Reset" does that cut out a significant
> > portion of the concern?
>
> It will prevent SR-IOV devices (or more accurate their VFs)
> to be configured through the fwctl, as they are destroyed in HW
> during reboot.

Right, but between zero configurability and losing live SR-IOV
configurabilitiy is there still value? Note, this is just a thought
experiment on what if any Command Effects Linux can comfortably tolerate
vs those that start to be more spicy and dip into removing stimulus /
focus on the commons, or otherwise injuring collaboration.